Karma Acoustic Joistdeck 37 is a high-performance overlay board that can be installed directly on joists and supported by a resilient acoustic ceiling system. A 15mm chip foam strong layer is laminated to 22mm T&G4 chipboard. Airborne and impact sound are both reduced by timber joist flooring. When the original floorboards need to be replaced on a timber floor, this product is used. For more information, please contact our sales team.